 Known Direct Subclasses
| JarFile |
JarFile is used to read jar entries and their associated data from jar files. |
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Class Overview
This class provides read-only random access to a Zip archive.
The easy way to do this would be to use ZipInputStream to scan out
the entries. This is less efficient than reading the central directory,
because it requires performing small reads at points across the entire
file, rather than reading one concentrated blob.
Use ZipOutputStream if you want to create an archive.
Summary
| Public Constructors |
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ZipFile(File file)
Constructs a new ZipFile opened on the specified File.
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ZipFile(File file, int mode)
Open a Zip file.
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ZipFile(String name)
Open a Zip file.
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| Protected Methods |
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void
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finalize()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver.
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[Expand]
Inherited Methods |
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From class java.lang.Object
|
Object
|
clone()
Returns a new instance of the same class as the receiver, whose slots
have been filled in with the values in the slots of the receiver.
|
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boolean
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equals(Object o)
Compares the argument to the receiver, and returns true if they represent
the same object using a class specific comparison.
|
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void
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finalize()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver.
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final
Class<? extends Object>
|
getClass()
Returns the unique instance of java.lang.Class which represents the class
of the receiver.
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int
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hashCode()
Returns an integer hash code for the receiver.
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final
void
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notify()
Causes one thread which is wait ing on the receiver to be
made ready to run.
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final
void
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notifyAll()
Causes all threads which are wait ing on the receiver to
be made ready to run.
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String
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toString()
Returns a string containing a concise, human-readable description of the
receiver.
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final
void
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wait(long time, int frac)
Causes the thread which sent this message to be made not ready to run
either pending some change in the receiver (as indicated by
notify or notifyAll) or the expiration of
the timeout.
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final
void
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wait(long time)
Causes the thread which sent this message to be made not ready to run
either pending some change in the receiver (as indicated by
notify or notifyAll) or the expiration of
the timeout.
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final
void
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wait()
Causes the thread which sent this message to be made not ready to run
pending some change in the receiver (as indicated by notify
or notifyAll).
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Constants
public
static
final
int
CENATT
Constant Value:
36
(0x00000024)
public
static
final
int
CENATX
Constant Value:
38
(0x00000026)
public
static
final
int
CENCOM
Constant Value:
32
(0x00000020)
public
static
final
int
CENCRC
Constant Value:
16
(0x00000010)
public
static
final
int
CENDSK
Constant Value:
34
(0x00000022)
public
static
final
int
CENEXT
Constant Value:
30
(0x0000001e)
public
static
final
int
CENFLG
Constant Value:
8
(0x00000008)
public
static
final
int
CENHDR
Constant Value:
46
(0x0000002e)
public
static
final
int
CENHOW
Constant Value:
10
(0x0000000a)
public
static
final
int
CENLEN
Constant Value:
24
(0x00000018)
public
static
final
int
CENNAM
Constant Value:
28
(0x0000001c)
public
static
final
int
CENOFF
Constant Value:
42
(0x0000002a)
public
static
final
long
CENSIG
Constant Value:
33639248
(0x0000000002014b50)
public
static
final
int
CENSIZ
Constant Value:
20
(0x00000014)
public
static
final
int
CENTIM
Constant Value:
12
(0x0000000c)
public
static
final
int
CENVEM
Constant Value:
4
(0x00000004)
public
static
final
int
CENVER
Constant Value:
6
(0x00000006)
public
static
final
int
ENDCOM
Constant Value:
20
(0x00000014)
public
static
final
int
ENDHDR
Constant Value:
22
(0x00000016)
public
static
final
int
ENDOFF
Constant Value:
16
(0x00000010)
public
static
final
long
ENDSIG
Constant Value:
101010256
(0x0000000006054b50)
public
static
final
int
ENDSIZ
Constant Value:
12
(0x0000000c)
public
static
final
int
ENDSUB
Constant Value:
8
(0x00000008)
public
static
final
int
ENDTOT
Constant Value:
10
(0x0000000a)
public
static
final
int
EXTCRC
Constant Value:
4
(0x00000004)
public
static
final
int
EXTHDR
Constant Value:
16
(0x00000010)
public
static
final
int
EXTLEN
Constant Value:
12
(0x0000000c)
public
static
final
long
EXTSIG
Constant Value:
134695760
(0x0000000008074b50)
public
static
final
int
EXTSIZ
Constant Value:
8
(0x00000008)
public
static
final
int
LOCCRC
Constant Value:
14
(0x0000000e)
public
static
final
int
LOCEXT
Constant Value:
28
(0x0000001c)
public
static
final
int
LOCFLG
Constant Value:
6
(0x00000006)
public
static
final
int
LOCHDR
Constant Value:
30
(0x0000001e)
public
static
final
int
LOCHOW
Constant Value:
8
(0x00000008)
public
static
final
int
LOCLEN
Constant Value:
22
(0x00000016)
public
static
final
int
LOCNAM
Constant Value:
26
(0x0000001a)
public
static
final
long
LOCSIG
Constant Value:
67324752
(0x0000000004034b50)
public
static
final
int
LOCSIZ
Constant Value:
18
(0x00000012)
public
static
final
int
LOCTIM
Constant Value:
10
(0x0000000a)
public
static
final
int
LOCVER
Constant Value:
4
(0x00000004)
public
static
final
int
OPEN_DELETE
Delete zip file when closed.
Constant Value:
4
(0x00000004)
public
static
final
int
OPEN_READ
Constant Value:
1
(0x00000001)
Public Constructors
public
ZipFile
(File file)
Constructs a new ZipFile opened on the specified File.
public
ZipFile
(File file, int mode)
Open a Zip file.
"mode" must be OPEN_READ or OPEN_READ|OPEN_DELETE. The latter
sets the "delete on exit" flag through a File object.
Public Methods
public
void
close
()
Close the Zip file.
This could be called multiple times, e.g. once explicitly and again
by the finalizer.
The Java doc doesn't say anything about what operations like
entries() or getName() are supposed to do after the file is closed.
Return an enumeration of the entries.
The entries are listed in the order in which they appear in the
Zip archive.
public
ZipEntry
getEntry
(String entryName)
Gets the zip entry with the specified name from this ZipFile.
Parameters
| entryName
| the name of the entry in the zip file |
Returns
- a ZipEntry or null if the entry name does not exist in the zip
file
Returns an input stream on the data of the specified ZipEntry.
Returns
- an input stream on the ZipEntry data
public
String
getName
()
Gets the file name of this ZipFile.
Returns
- the file name of this ZipFile
public
int
size
()
Returns the number of ZipEntries in this ZipFile.
Returns
- Number of entries in this file
Protected Methods
protected
void
finalize
()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver. Subclasses can use this facility to guarantee
that any associated resources are cleaned up before the receiver is
garbage collected. Uncaught exceptions which are thrown during the
running of the method cause it to terminate immediately, but are
otherwise ignored.
Note: The virtual machine assumes that the implementation in class Object
is empty.
